Waterproofing compositions



1 0. 8 2 .1 cross REFERENCE EXAMlNER United States Patent 3,021,225WATERPROOFING COMPOSITIONS Erna Emilie Ziak, 14 Addison Gardens,

For use, the paste is mixed with water and various dilutions will befound appropriate, depending upon the use to which the composition is tobe put.

For example, the composition may be applied to walls,

. LoPdon England 5 stone-work, plaster etc. that is already set, or maybe 9 'ggg s, g i g t zfi i32 added to cement, plaster and other liquidmixtures prior aclaims. (CL 106 78) to making up or surfacing walls,ceilings and so on.

Where the composition according to the invention is for The presentinvention relates to compositions for prouse as a coating material onalready-prepared walls and tecting stone, cement, plaster and similarsubstances from 10 other surfaces, the strength is relatively weak, e.g.of the the efiects of moisture, hereinafter referred to for simorder of1 part composition to 8 or 10 parts water. plicity as waterproofingcompositions." Where the composition is to be added to liquid mixturesAccording to the invention there is provided a waterfor new buildingpurposes, the strength is much higher, proofing composition thatincludes curd soap, water, e.g. of the order of 1 part composition to 4or 6 parts slaked lime and sodium silicate. water.

The preferred approximate range of percentage com- I have also foundthat small quantities of barium sulposition of a concentrated waterproofcomposition is as P e a d Sodium phosphate may advantageously be fllows; added to the composition so far described, but this is not P rent by weight essential. These additions are so small as not substan-Curd soap 10 to 18 20 ti lly to interfere with the percentages referredto above. Water 28 to 40 r example, the additions of these two extramaterials Slaked lime 44 to 50 m y be of the order of 0.15 kg. of bariumsulphate and Sodium silicate 2 to 4 -23 g. sodium phosphate in thespecific composition re erred to above. However, these additionalmaterials The actual quaimmes of mlitenals a i 25 may vary from 0.05 to0.25 kg. barium sulphate and ence .P .requuemems l examp f; t e o g 0.01kg. to 0.05 kg. sodium phosphate. quanun? gwe an .examp g 9 a cconcentrate Whilst the composition according to the invention hascomposmon according to t e Invention been referred to as a waterproofingmaterial, I have found Curd soap -kg 1.40 that it is also highlyresistant to acids of the kinds nor- Water litres 3.75 mally met indomestic situations, for example sulphuric Slaked limekg 5.00 acid,nitric acid and hydrochloric acid, to name but a Sodium silicate litre0.40 few. I do not claim, however, that the composition will resist alland every acid, nor that it is acid proof in the 0.5 0 ig i ir i z o iii i g fig gi gg fgfg ig meaning that it is completely impervious to allacids above. 01rd soap is sometimes referred to as pure soap.Additionally, the sodium silicate content may i fin vary from 020 litreto 0.60 litre, the water from 2 litres waterproo g composltlon .xmslstmgof propor' to 4 litres, and the slaked lime from 2.00 kg. to 7.00 kg.ffi curd. it Water Sodium silicate is also referred to as waterglass. Si and 6 mm In making up a .0. .an?:aaarersssasas? EJ135315; g z ggigg tothe mvenuon the following Procedure sulphate and from 0.01 to 0.05 kg.sodium phosphate.

(1) The soap is shredded or flaked and stirred into some of the waterwhich is preferably heated in a con- References Cited in the file ofthis Patent tainer, and then the remainder of the water is added whilstthe mixture is still under heat, until the soap has UNITED STATESPATENTS been completely dissolved. If the water is cold the soap 639,914Summers Dec. 26, 1899 will take much longer to dissolve; it is thereforemore ,689,732 Laucks Oct. 29, 1923 practical to heat it.

(2) The dissolved soap and water mixture is then FOREIGN PATENTS boiledand the slaked lime gradually added thereto.

When thoroughly mixed the container is removed from 124,850 Austraha1944 the heat and the sodium silicate is added. 12,251 Sweden June 9,1900 The result is a thick paste which can be marketed, 112 Great Bmam12, 1875 without further modification, in suitable containers or 0f 1875wrapping material, such as metal drums or tins or straw- 8,217 GreatBritain y 1834 board or fibre containers, if necessary with a waterproof0f 3 lining material such as a lining or bag of polythene. $08,899Belgium Feb. 29, 1952

1. A WATERPROOFING COMPOSITION CONSISTING OF PROPORTIONALLY 1.40 KG.CURD SOAP, 3.75 LITERS WATER, 5.00 KG. SLAKED LIME AND 0.40 LITRE SODIUMSILICATE.